rear diff

[etuke]

Was there any offerings from dodge for a locking rear diff in the 2014 outdoorsman?
Just bought this truck and from the get go I noticed it rumbled on turn under load from intersections,just though the clutches were bad or dry from not being used.I figgured over time they would quiet down.Had the rear of the gorund the other day and I could easily spin one wheel while the other turned backwards(open diff).Today I noticed the truck rumbled again and made a lil whine noise no I decided to get to a parking lot and do some hards turns.The noise is there under load but not ilding along forward and reverse.Heres the weird thing,I put one tire on grass and the other on pavement and both spun.Did the same several time on gravel and pavement and both spun so no way it open diff.If its not factory then has to aftermarket.Don't mind the two tire fire at all but the noise worries me,on the highway she is completely quiet(no whining,whistling,grinding,scraping at all)Same for straight take off its completely quiet,I though lockers would ractchet on turns.Never had any truck act like that before but never had any lockers in them other that a g80 in a chev.The thing that stumps me when it was off the ground and spun the one tire and the other going backwards there was no resistance what so ever.Thoughts?

 

[1999 White C5 Coupe]

Was there any offerings from dodge for a locking rear diff in the 2014 outdoorsman?
Just bought this truck and from the get go I noticed it rumbled on turn under load from intersections,just though the clutches were bad or dry from not being used.I figgured over time they would quiet down.Had the rear of the gorund the other day and I could easily spin one wheel while the other turned backwards(open diff).Today I noticed the truck rumbled again and made a lil whine noise no I decided to get to a parking lot and do some hards turns.The noise is there under load but not ilding along forward and reverse.Heres the weird thing,I put one tire on grass and the other on pavement and both spun.Did the same several time on gravel and pavement and both spun so no way it open diff.If its not factory then has to aftermarket.Don't mind the two tire fire at all but the noise worries me,on the highway she is completely quiet(no whining,whistling,grinding,scraping at all)Same for straight take off its completely quiet,I though lockers would ractchet on turns.Never had any truck act like that before but never had any lockers in them other that a g80 in a chev.The thing that stumps me when it was off the ground and spun the one tire and the other going backwards there was no resistance what so ever.Thoughts?

I have a 2014 Ram 1500 crew cab Outdoorsman with the Hemi engine.

In the USA, the rear differential came standard on the Outdoorsman trim with the locking rear differential.

When I changed the rear differential fluid using OEM Mopar fluid, I also added 4 oz. of the anti-slip Mopar fluid.

I see you are in Canada? I am in the USA. I do not know if the Canada trucks may have a different rear differential on the Outdoorsman trim?

A Ram dealer parts department could quickly look up your truck features using the VIN, to determine the type of rear differential the vehicle was built with.

 

[etuke]

does yours make noises on turns with acceleration?More noticable when turning to go up hill.

 

[mrack]

It’s a limited slip diff, all outdoorsmans and trx4 had 3.92 limited slips. Shouldn’t be making noises

 

[G/T jonny]

Limited slip clutches don’t last forever usually wear out by 60,000 miles. Some diffs have problem with C clips dropping out and then the carrier housing gets ground away on Ring gear bolt heads.
That’s what happened on my 03 3.92 limited slip so I replaced the carrier with Detroit TruTrak which is open until one wheel starts slipping and then the gears do their magic and send torque to the side that’s not spinning.
Might be worth pulling the cover, seeing what’s in there, what condition it’s in and putting fresh fluid

 

[etuke]

Limited slip clutches don’t last forever usually wear out by 60,000 miles. Some diffs have problem with C clips dropping out and then the carrier housing gets ground away on Ring gear bolt heads.
That’s what happened on my 03 3.92 limited slip so I replaced the carrier with Detroit TruTrak which is open until one wheel starts slipping and then the gears do their magic and send torque to the side that’s not spinning.
Might be worth pulling the cover, seeing what’s in there, what condition it’s in and putting fresh fluid

was thinking of dropping the pan and having a look.If the C-clip drops out the side axle should fall out also am I right?The problem I'm having with it being a regular LSD with worn clutches is the fact its 2 tire fire on uneven terrain(one tire on pavement other on grass or gravel).If clutches were worn it should be like an open diff.I know its not any type of locker as I can spin on tire by hand and the other turns backwards so there are gears in there connection the 2 axles.Its more logical that I have the LSD with bad clutches but why the solid lock up,thats what confuses me.
Edit: you say you had a truetrac installed,if by some chance this was done to my truck by previous owner do they make some noise on turns under acceleration?

 

[crash68]

It’s a limited slip diff, all outdoorsmans and trx4 had 3.92 limited slips.

^^^ this
With a slight exception, most Outdoorsman with the EcoDiesel with the 140" wheelbase for some reason was built with 3.55 gearing.

 

[etuke]

Allright did some testing today
1st--jacked the truck up both sides in park and spun the drivers tire and with very little resistance(brakes)the passenger tire went the opposite way.I did hear a bit of gear noise but minimal.
2ND-- Let the passenger tire down and tried to spin the drivers tire with truck in neutral but the truck wouldn't let me release the brake and stay in neutral so that was a bust.If somebody knows how please let me know.
3RD-- I still had the passenger tire down drivers up I started the truck an put it in gear and the tire in the air spun freely.did the same with tires reversed and same result,tire in the air spun freely even when I gassed it a bit to get it going faster untill the truck decided to go back to park on its own(annoying trying to test things when the truck is making decisions with the gear selection)
4th-- with one tire in the air I applied the brake and gave it gas in drive and reverse and both tires locked and the grounded tire spun a hole in my driveway,tried both wheels with same result.
With the truck on the ground and driving it will spins both tires no matter the traction difference(1 on pavement and other on grass).from what I can gather from this its more likely someone changed the diff carrier to a geared LSD as the clutch pack shouldn't have given me all those results combined.Does my logic sound good here?may try to inspect through the fill hole with a camera and see what the carrier looks like.

 

[62Blazer]

There are several types of gear driven limited slips that will act as you describe. If I remember correctly the True Trac I had years ago in my truck would act exactly the same. It would spin the rear tires in opposite directions when both were in the air. Also not unusual for just one tire to spin when one is in the air and the other on the ground as the limited slip can only overcome so much traction difference between them. Applying the brakes evens out the torque load and can make the one tire engaged (or diff basically locks up).

 

[etuke]

It’s a limited slip diff, all outdoorsmans and trx4 had 3.92 limited slips. Shouldn’t be making noises

just looked up my vin online and it says I have 3.21 rear axle.Is this wrong,I know these online vin lookups arent always accurate.

 

[mrack]

just looked up my vin online and it says I have 3.21 rear axle.Is this wrong,I know these online vin lookups arent always accurate.

I suppose it’s possible someone ordered it that way for some unintelligent reason, I’ve never seen anything other then a 3.92 in an outdoorsman. What vin lookup did you use?Is limited slip mentioned anywhere on the build sheet?

 

[etuke]

just did another search on mopar.com and they tell me its a 3.92 anti slip.All the other things they list are correct to so I'm inclined to believe this one.

EDIT: I was looking at another truck thats scrapped and wanted to know differential ratios from both in case the noise I'm having in mine is major.Mopar.com tells me both have 3.92 ratio but the scrapped truck has a conventioal axle.

 

[Wild one]

Allright did some testing today
1st--jacked the truck up both sides in park and spun the drivers tire and with very little resistance(brakes)the passenger tire went the opposite way.I did hear a bit of gear noise but minimal.
2ND-- Let the passenger tire down and tried to spin the drivers tire with truck in neutral but the truck wouldn't let me release the brake and stay in neutral so that was a bust.If somebody knows how please let me know.
3RD-- I still had the passenger tire down drivers up I started the truck an put it in gear and the tire in the air spun freely.did the same with tires reversed and same result,tire in the air spun freely even when I gassed it a bit to get it going faster untill the truck decided to go back to park on its own(annoying trying to test things when the truck is making decisions with the gear selection)
4th-- with one tire in the air I applied the brake and gave it gas in drive and reverse and both tires locked and the grounded tire spun a hole in my driveway,tried both wheels with same result.
With the truck on the ground and driving it will spins both tires no matter the traction difference(1 on pavement and other on grass).from what I can gather from this its more likely someone changed the diff carrier to a geared LSD as the clutch pack shouldn't have given me all those results combined.Does my logic sound good here?may try to inspect through the fill hole with a camera and see what the carrier looks like.

Why not pull the cover,that way you can clean out the housing and inspect things a bit better.The cover just uses RTV as a gasket.

 

[etuke]

wa

Why not pull the cover,that way you can clean out the housing and inspect things a bit better.The cover just uses RTV as a gasket.

was a plan for later but tonight I pulled the fill plug and the diff stopped at the point where i could partially see the spider gears and clutch pack.Now I know its original anti spin but this opens up more questions for me and I hope you guys won't mind answering if you know it.
1-if its anit spin why with two tires off the ground I can turn one tire with no resistance and the other goes the other way?
2-If the clutches are worn letting me turn the tire easily then why does it lock hard when used on uneven ground?
3-If I am getting a rumble on turns would it mean the clutches are worn out or should I just try adding friction modifier?
4- did the anti spin diff change from 2011 to 2014?I had a laramie with anti spin and that thing only spun 1 wheel this 2014 locks both hard.
5- does the clutch use a ramp system to put force on the clutch pack tightening it the more it slips?

I have never had a clutch pack LSD lock up so hard before,its like a locker untill I lift the rear and spin the tire by hand,it then feels like an open diff.If this is normal for the ram LSD then I'm quite impressed with it workings except for the rumble I get on turns( have to figgure this out)

 

[Wild one]

wa

was a plan for later but tonight I pulled the fill plug and the diff stopped at the point where i could partially see the spider gears and clutch pack.Now I know its original anti spin but this opens up more questions for me and I hope you guys won't mind answering if you know it.
1-if its anit spin why with two tires off the ground I can turn one tire with no resistance and the other goes the other way?
2-If the clutches are worn letting me turn the tire easily then why does it lock hard when used on uneven ground?
3-If I am getting a rumble on turns would it mean the clutches are worn out or should I just try adding friction modifier?
4- did the anti spin diff change from 2011 to 2014?I had a laramie with anti spin and that thing only spun 1 wheel this 2014 locks both hard.
5- does the clutch use a ramp system to put force on the clutch pack tightening it the more it slips?

I have never had a clutch pack LSD lock up so hard before,its like a locker untill I lift the rear and spin the tire by hand,it then feels like an open diff.If this is normal for the ram LSD then I'm quite impressed with it workings except for the rumble I get on turns( have to figgure this out)

That's the way the stock LSD works in a Ram,they aren't quite the same as an old school limited slip where both tires spin the same direction.The clutches need a load on them to engage.Pull the diff cover,clean out the inside good and fill it back up with your choice of 75W-140 fluid,if it still chatters,throw 4 oz's of Mopar additive in it,and see what happens.Your 14 still calls for 75W-140,they hadn't got stupid with going to a lighter diff fluid for milege numbers yet in 14

 

[Black1500Ram]

wa

was a plan for later but tonight I pulled the fill plug and the diff stopped at the point where i could partially see the spider gears and clutch pack.Now I know its original anti spin but this opens up more questions for me and I hope you guys won't mind answering if you know it.
1-if its anit spin why with two tires off the ground I can turn one tire with no resistance and the other goes the other way?
2-If the clutches are worn letting me turn the tire easily then why does it lock hard when used on uneven ground?
3-If I am getting a rumble on turns would it mean the clutches are worn out or should I just try adding friction modifier?
4- did the anti spin diff change from 2011 to 2014?I had a laramie with anti spin and that thing only spun 1 wheel this 2014 locks both hard.
5- does the clutch use a ramp system to put force on the clutch pack tightening it the more it slips?

I have never had a clutch pack LSD lock up so hard before,its like a locker untill I lift the rear and spin the tire by hand,it then feels like an open diff.If this is normal for the ram LSD then I'm quite impressed with it workings except for the rumble I get on turns( have to figgure this out)

A bit of misunderstanding on how a clutch style LSD works here.

I found the below video helpful.

Understanding Limited Slip Differential

This video is aimed at giving a clear explanation on working of LSD with help of animation. Working of clutch pack based LSD is elaborated here.• Learn more ...

youtu.be

1. With two wheels off the ground and no rotation of the pinion, there is no rotation of the ring gear/internal carrier. Therefore the only way the axles can turn is if the spider gears are rotating. Since the axles are meshing on opposite sides of a common gear, they have to turn in opposite directions.

2. See video clutches aren’t engaged when you’re turning the wheel by hand, not enough torque applied and again no pinion rotation.

3. Depends on the rumble, could also be bearing related. Most synthetic diff fluids these days have friction modifier built in.

4. Don’t know the answer here

5. Answer in vid.

I also saw you reference the clips that can come dislodged. Those are not the moon clip (c lip) for the axles.
What was referenced is the clips that go around the ears of the clutch disks and fit in a recess in the center carrier. No risk of axles wondering off.

I just changed my diff bearings in my ‘15… thing is silent now.

 

[etuke]

very informative video,thanks
I get a rumble from turns under load (intersections or turning uphill while giving gas)from the inside wheel,or so it seems.I can feel it in the truck,straight its fine,highway no noises but soemtimes it only has to a slight turn.Seems to be worse after the truck is used a bit,cold seems to be better.Think I'm going to drop the pan clean it out add new fluid and some modifier.

 

[GTyankee]

a complete equipment listing for your Ram, can be found at

FCA RAM

fcagroup.my.site.com

Use all Capital Letters when entering your VIN

 

[etuke]

a complete equipment listing for your Ram, can be found at

FCA RAM

fcagroup.my.site.com

Use all Capital Letters when entering your VIN

Thanks

 

[etuke]

well seems a bottle of friction modifier has fixed my issue,havent heard the noise since I put it in.Hope the axle locks two wheels as good as it did before but I kinda thinking it won't as the modifier will allow more slipping so less clutch grab.